Essential University Physics: Volume 1 (3rd Edition)

by
Wolfson, Richard

Published by
Pearson

ISBN 10:
0321993721

ISBN 13:
978-0-32199-372-4

Chapter 17 - Exercises and Problems - Page 314: 55

Answer

Please see the work below.

Work Step by Step

We know that
$Q=mL_f$
We plug in the known values to obtain:
$Q=(20)(334000)$
$Q=6680000J$
Now we can find the power as
$P=\frac{Q}{t}$
We plug in the known values to obtain:
$P=\frac{6680000}{(6.0)(60)}$
$P=19000W$